## Geometry: Common Core (15th Edition)

312.5 $ft^{2}$
Make the diagram of a square, and find the area. A=bh A=25(25) A=625 Find the area of the white region of the square you formed. A=$\frac{1}{2}$bh A=\$\frac{1}{2}(25)(25) A=312.5 Subtract the area of the triangle from the area of the square: 625-312.5=312.5